Pure Peptides is a US research-peptide vendor that lists 16 injectable peptides, including SS-31, MOTS-c and BPC-157. Across 14 products with a market median, its prices sit 5% above the median for the same peptide and vial size; it is the cheapest vendor we track on SS-31 and Tirzepatide, and pricier on Thymosin Beta-4 and NAD+. We found certificates for most of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. Shipping is quoted at 3–4 days. It does not accept returns.
Facts extracted from the vendor’s site and not yet reviewed by us.
COA coverage: Broad
We found certificates for most of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index.
from 34 indexed documents
current certificates, by the date printed on them
MZ Biolabs signs the most of them
oldest May 12, 2025
The site names MZ Bio Labs as its testing lab. These are the vendor’s own flags, not our measurements.
States every lot is independently tested by a US laboratory (elsewhere named MZ Bio Labs) for purity (99%+), quantity, and endotoxins before release, with a Certificate of Analysis and endotoxin report shipped with every order.
$5/mg median
▼ 26%
Median price per mg across Pure Peptides’s 14-18 priced listings, from Jul 17 ($6.75/mg) to Oct 14 ($5/mg) over 35 observed days. The mix of products behind the median changes as listings come and go, so this tracks the catalog as well as the prices.
Listed prices at Pure Peptides against the median price per mg for the same peptide at the same vial size, across every vendor we track. Vendors change prices without notice, so check the current listing before you order.
Below the market median on 3 of 11 comparable listings, above it on 8. Typical listing: 5% above market. Showing the 6 largest differences.
International
5% above
vs market median
14
peptides
Broad
in-stock products
Oct 14
International
37% above
vs market median
38
peptides
Limited
in-stock products
Oct 14
International
3% above
vs market median
52
peptides
Partial
in-stock products
Oct 14
International
4% below
vs market median
46
peptides
None found
in-stock products
Oct 12
Pure Peptides sits 5% above market the tracked market median on matched peptide/size rows. The catalog in this index is smaller than Oath Research's. On COA coverage, Pure Peptides rates broad and Oath Research rates limited. Based on the certificates our crawler found; vendors may publish more than we index.
The honest comparison unit is price per mg on matched peptide/size rows. COA coverage is presence of a current indexed document, not purity-as-quality. See the Evidence Atlas and how to read a COA.
Evidence boundary: Listed prices, stock signals, and indexed COA documents are observations. They do not establish legitimacy, authenticity, safety, sterility, chain of custody, product quality, fulfillment, or suitability. No vendor is endorsed.
Pricing data cannot settle that question, and we do not test products or verify fulfillment. Here is the evidence we do hold for Pure Peptides. We found certificates for most of the in-stock products we track. Those certificates were signed by 1 lab, the newest tested June 23, 2026. Based on the certificates our crawler found; vendors may publish more than we index. We have been recording their prices since July 3, 2026. Read each certificate yourself, check that its lot and compound match what you are buying, and treat anything we have not recorded as unknown rather than as an answer.
We found certificates for most of the in-stock products we track. The freshest was tested June 23, 2026. Based on the certificates our crawler found; vendors may publish more than we index. We have not recorded a testing or COA page on their site. A certificate on file records what a document says; it cannot prove chain of custody or what is in the vial you receive.
Pure Peptides states that orders ship from US. They state that they do not ship internationally. This is what the vendor says about itself, not something we have verified.
We have not recorded a shipping cost for Pure Peptides. Stated delivery is 3–4 days. Their shipping page is at https://purepeptides.bio/shipping-delivery-return-policies/. Checkout is the only place these figures are binding.
We have none on record for Pure Peptides. When a code we can verify appears, it shows on this page and the prices here are adjusted for it; until then, every figure on this page is the list price.
Across 14 graded products, Pure Peptides's median price per mg sits 4.7% above the median for the same peptide at the same vial size. We track 14 products from them in total. Price per mg is the comparison unit: a cheaper vial holding less is not a cheaper product.
Product documentation
Across the tracked peptide products we hold for Pure Peptides, COA coverage rates broad. The public index contains 34 documents. Reported test dates in this set run from May 12, 2025 through Jun 23, 2026. That rating covers the full tracked catalogue for Pure Peptides, including products that are currently out of stock, so it can differ from the in-stock rating above. Based on the certificates our crawler found; vendors may publish more than we index.
across the full tracked catalogue
current certificates, by the printed test date.
Printed date is over 18 months old.
Named on more current records than any other lab.
Certificate assessment
10 evaluated certificates
9 graded · 1 not graded · 0 in the A range.
The sample prioritizes up to ten popular peptides from this vendor. Grades assess the document and its reported tests, not the vendor’s whole catalog or the safety of a product.
Automated checks can make mistakes. Open “Why this result?” for the reason and any review notice, and check the linked COA’s lot against your product. How grading works
10 evaluated records
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
SPMTC2606 (Vial 2)
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
LSTS2603 (Vial 1)
Not graded
This report covers a single test (Only a Mass Spectrometry (MS) identity test page is present (Recorded MS spectrum and identity block), no other tests shown.), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2026-02-27 (Vial 1)
Document grade
Review required
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2026-01-29 (Vial 2)
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2026-01-29 (Vial 1)
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2026-01-29 (Vial 1)
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
JYC1001
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2025-04-24
Document grade
C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
2025-04-24
| COA grade | Printed lab | Certificate | |||
|---|---|---|---|---|---|
| MOTS-c Lot: SPMTC2606 (Vial 2) | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Jun 23, 2026 | 99.56%99.5%+ | View COA |
| Tesamorelin Lot: LSTS2603 (Vial 1) | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Jun 23, 2026 | 99.92%99.5%+ | View COA |
| BPC-157 Lot: Not reported | Not graded Why this result?This report covers a single test (Only a Mass Spectrometry (MS) identity test page is present (Recorded MS spectrum and identity block), no other tests shown.), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | May 28, 2026 | No purity printed | View COA |
| Thymosin Alpha-1 Lot: 2026-02-27 (Vial 1) | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Mar 12, 2026 | 99.67%99.5%+ | View COA |
| GHK-Cu Lot: 2026-01-29 (Vial 2) | Document grade Review required Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Feb 10, 2026 | 99.73%99.5%+ | View COA |
| NAD+ Lot: 2026-01-29 (Vial 1) | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Feb 10, 2026 | 99.56%99.5%+ | View COA |
| SS-31 Lot: 2026-01-29 (Vial 1) | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Feb 10, 2026 | 99.47%99.0–99.49% | View COA |
| Melanotan II Lot: JYC1001 | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | Jun 30, 2025 | 99.85%99.5%+ | View COA |
| Ipamorelin Lot: 2025-04-24 | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | May 12, 2025 | 99.05%99.0–99.49% | View COA |
| PT-141 Lot: 2025-04-24 | Document grade Why this result?C10: No endotoxin (bacterial toxin) test is reported, and an injectable needs one, so the grade stops at D. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | MZ Biolabs | May 12, 2025 | 99.69%99.5%+ | View COA |
13 current records
SPMTC2606 (Vial 2)
LSTS2603 (Vial 1)
LSSTZ3002 (Vial 2)
2026-02-27 (Vial 1)
2026-01-29 (Vial 2)
2026-01-29 (Vial 1)
2026-01-29 (Vial 1)
2025-10-08
SPECTB101
JYC1001
2025-04-24
2025-04-24
| Printed lab | Certificate | |||
|---|---|---|---|---|
| MOTS-c | MZ Biolabs | Jun 23, 2026 | 99.56%99.5%+ | View COA |
| Tesamorelin | MZ Biolabs | Jun 23, 2026 | 99.92%99.5%+ | View COA |
| BPC-157 | MZ Biolabs | May 28, 2026 | No purity printed | View COA |
| Tirzepatide | MZ Biolabs | May 22, 2026 | 99.66%99.5%+ | View COA |
| Thymosin Alpha-1 | MZ Biolabs | Mar 12, 2026 | 99.67%99.5%+ | View COA |
| GHK-Cu | MZ Biolabs | Feb 10, 2026 | 99.73%99.5%+ | View COA |
| NAD+ | MZ Biolabs | Feb 10, 2026 | 99.56%99.5%+ | View COA |
| SS-31 | MZ Biolabs | Feb 10, 2026 | 99.47%99.0–99.49% | View COA |
| SLU-PP-332 | MZ Biolabs | Oct 22, 2025 | No purity printed | View COA |
| Thymosin Beta-4 | MZ Biolabs | Jul 15, 2025 | 99.36%99.0–99.49% | View COA |
| Melanotan II | MZ Biolabs | Jun 30, 2025 | 99.85%99.5%+ | View COA |
| Ipamorelin | MZ Biolabs | May 12, 2025 | 99.05%99.0–99.49% | View COA |
| PT-141 | MZ Biolabs | May 12, 2025 | 99.69%99.5%+ | View COA |
A record appears on file after our pipeline identifies the document as a certificate of analysis and matches its printed compound to a catalog peptide. The record cannot prove authenticity, chain of custody, sterility, product safety, or suitability for use.
These are counts of documents in our index, and a coverage rating of what our crawler found. They do not grade vendor quality, legitimacy, or safety. Printed fields can contain transcription errors. “Older record” means the reported test date is more than 18 months old.
See the testing methodology and dataset, or compare this coverage against another vendor in the vendor comparison tool.
The Peptide App. Pure Peptides peptide prices, COA coverage and vendor facts. Updated October 14, 2026. https://www.thepeptide.app/pricing/vendor/pure-peptides
The Peptide App. (2026). Pure Peptides peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/pure-peptides
Prices and certificate counts on this page were last refreshed October 14, 2026.
